Problem Possible causes/consequences and
0003 Solutions
You have lost a key.
X
Have the key cancelled at a Mercedes-Benz Service Centre.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the emer-
gency key element.
X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. The engine cannot be
started using KEYLESS-
GO. The key is in the
vehicle. Ad
oor is open. Therefore, the key cannot be detected as easily.
X Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle with the key in the ignition lock. The engine cannot be
started using the key. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
X Remove the key and reinsert it into the ignition lock.
X Start the engine within 30 seconds of inserting the key in the
ignition lock.
X Repeat if necessary.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 334).
or
X Jump-start the vehicle (Y page 338).
or
X Consult a qualified specialist workshop. 320
TroubleshootingPractical advice
BA 197 ECE RE 2010/6a; 1; 2, en-GB
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Problem Possible causes/consequences and
0003 Solutions
The key cannot be
turned in the ignition
lock. The key has been in position
0for a considerable time.
X Remove the key and reinsert it into the ignition lock.
X Check the starter battery and charge it if necessary
(Y page 334).
X Start the engine. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to turn the key again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 334).
or
X Jump-start the vehicle (Y page 338).
or
X Consult a qualified specialist workshop. Parking up the vehicle
Problem Possible causes/consequences and
0003 Solutions
The vehicle is to be left
parked up for longer
than six weeks. Damage resulting from non-use may occur if the vehicle is parked
up for long periods.
X
Visit a qualified specialist workshop and seek advice.
X Disconnect the battery (Y page 336).Locking/unlocking in an emergency
Emergency key element
If the vehicle can no longer be locked or
unlocked with the key, use the emergency
key element.
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system will be triggered
(Y page 49).
There are several ways to turn off the alarm:
X Press the 000Bor0009 button on the key.
or
X Insert the key into the ignition lock. If you unlock the vehicle using the emergency
key element, the fuel filler flap will not be
unlocked automatically.
X
To unlock the fuel filler flap: insert the
key in the ignition lock. Locking/unlocking in an emergency
321Practical advice
BA 197 ECE RE 2010/6a; 1; 2, en-GB
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